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5 Written questions

5 Matching questions

  1. what kind of line does sound travel in
  2. longitudinal wave
  3. how does ultrasound work
  4. which acoustic variables are used to distinguish between sound waves and other types of waves
  5. what is acoustic propagation
  1. a sound pulses through biologic tissue or media and reflections arising from structures in the body return to the xducer and are processed into images
  2. b pressure, density, and distance
  3. c the effects of the medium upon the sound wave (compression and rarefication)
  4. d straight or longitudinal
  5. e particles move in the same direction that the wave propagates

5 Multiple choice questions

  1. kg/cm cubed
  2. all waves carry energy
  3. the wave is not a sound wave
  4. when the frequencies of the waves differ, both constructive and destructive interference occur
  5. sound is a mechanical longitudinal wave that moves by compression and rarefaction--particles in the medium vibrate back and forth from a fixed position

5 True/False questions

  1. what is constructive interferencethe interference of a pair of in phase waves forms a single wave of greater amplitude than either of its components--the resulting wave is larger than its components


  2. units of pressurekg/cm cubed


  3. units of distancepascals (Pa)


  4. if one of the acoustic variables of pressure, density, and distance has a rhythmic oscillation thenthe wave is not a sound wave


  5. what does sound need to travelsound must travel through a medium, it cannot travel through a vacuum